Riveting machine



3 Sheets-Sheet 1. G. H. PEGRAM. RIVETING MACHINE.

Patented June 22,1897.

(Np Model.)

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Attorney.

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(No Model.) 3 Slheets-Sheet 2. G. H. PEGRAM.

RIVBTING MACHINE.

No. 584.958. Patented June 22,1897.

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(No Model.)

Patented June-22,1897.

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UNITED STATES 'PATENT Ormea.

GEORGE H. PEGRAM, OF OlNIAI'IA, NEBRASKA.

RlVETlNG-NIACHINE.

SPECIFICATION forming part of Letters Patent No. 584,958, dated June 22, 1897.

Y Applioaticu led November 30, 1896. Serial No. 613,867. (No model.)

T0 all 11j/7:10772. t 71mg/ concern:

Be it known that I, GEORGE I-I. PEGRAM, of the cit-y of Omaha, Douglas county, State of Nebraska, have invented an Improvement in Rivet-ing-Machines, of which the following is a specification,

My invention has reference to rivetingmachines; and it consists of certain improvements which are fully set forth in the following speciioation'and are shown in the accompanying drawings, which form a part thereof.

The object of my invention is to provide means for riveting large tubular sections together, and also for riveting the longitudinal seams of the plates making up a tubular section.

More specifically considered, my object is to construct mechanical power devices adapted to be fed along the pipe or tubular section and supported thereby and capable of adjustment to secure the proper coaction for riveting in alinement with any rivet-hole throughout the circumference or in the length of the pipe or tube.

In carrying out my invention I construct a riveting-machine in two parts, one of which moves within and relatively to the tube or pipe and operates th'e riveting or upsetting dies and the other of which supports at the outside of the tube t-he anvil-dies. These two part-s are guided through or relativelyT to the tube or pipe by movable carriages running4 upon temporary tracks directly supported upon the tube or pipe-that is to say, one of the tracks is within the tube or pipe and the other is upon the top or outside of the pipe. The inner carriage supports the riveting-dies in such a manner that there may be two of them, and, further, that they may be adjustable about the interior of the tube. rlhe outer carriage supports an annular frame surrounding the pipe or tube 4for carrying the anvildies, and is so supported as to permit adjustmentr about and along the tube or pipe to bring the anvil-dies into alinement with the riveting-dies. Furthermore, in eases where the pipe to be riveted is inclined I prefer to provide means for holding the frame in an inclined position, as that a plane passing through it shall be at right angles to the length of the pipe.

The two parts of the apparatns-na1nely,

that upon the inside and that upon the outside-may be adj usted independently, but are held in relative coaction and workin g position by the tube or pipe itself and the temporary tracks. Y I would remark that while I prefer to arrange the anvil-dies upon the outside and the riveting-dies upon the inside of the tube this order may be reversed. The rivetingdies may be operated in any suitable manner, but I prefer to operate them by means of a piston and toggle gear, the former being moved by compressed air or steam.

In riveting-machines heretofore constructed the pressure between the riveting-die and the anvil-die is resisted through the medium of frames supported in position relatively to each other by rigid structures extending from one to the other lengthwise around the end of the pipe and inclosing one or more sides thereof, the size or length of which structure vdepends upon the distance of the rivet that is being driven from the end of the pipe where the legs of the structures connect.

In the device described herein it will be seen that the pressure is transmitted through the diameter of the pipe and the reaction through the frame encircling the pipe. In this manner rivets may be driven independently of the distance from the end of the pipe, whereby long lengths of pipe may be assembled previous to riveting. The strain through the annular frame is obviously balanced under all conditions, as ordinari-ly two rivets diametrically opposite are driven at a time, and Where only one rivet is driven a blank or thrust die is used on the opposite side in order to take the pressure to the frame. It is obvious that the encircling or annular frame may be made of any convenient shape, but practically a solid ring will give the best results, as it is the most economical disposition of material. In the design shown the annular frame is bodily movable around the pipe, but some constructions may make it desirable to have the frame fixed and allow the anvil-dies to move on the same, the main preferable constructive feature being that Y IOO are used in the ring in order to avoid the necessity for so much turning. It is obvious that more might be used, only two of which will, of course, be operated at one time.

The main advantages of my invention are that all ot the riveting necessary to form apipe may be done in its final position in the trench instead of part in the shop and part in the trench', as by the old methods, thus saving in handling and thereby cheapening the work; also greater speed can be obtained and also more perfect rivets can be driven through the application of steady high pressure than by the percussion methods previously used to drive the necessary field-rivets.

The special advantages of the annular frame are that it allows rivets to be driven at any distance from the end of the pipe, so that the assembling of the pipe in the trench can go on and any length of pipe put temporarily together regardless of the riveting; also, by carrying the reaction to the rivetingpressure around the pipe on both sides the weight of the frame may be symmetrically disposed, thus admitting of easy movement to catch the successive rivets; also less weight is required in a device of this kind than in one with a yoke of the ordinary type.

In some cases my improvements can be employed iu shopwork with advantage, and in this case the relative adjustment between the dies and tube is carried on irrespective ot' whether it is found desirable to adjust the dies or the work.

lroadly considered, my invention comprehcnds the combination of an annular or anvil frame adapted to be supported transversely to the length of the tube and provided with anvildies or thrust parts arranged to be brought into contact with rivets er with a rivet and the tube,1espccti\*ely, upon opposite sides of the tube and an internal riveting mechanism interposed between the anvil-dies or thrust parts and sustained by the tube being riveted, and further provided with dies or thrust parts corresponding to the anvil-dies or thrust parts of the annular or anvil frame and adapted to upset one or more rivets.

My invention will be better understood by reference to the accompanying drawings, in which- Figure l is a sectional side elevation of my improved riveting-machine in use, taken on line .t Fig. 2 is a cross-section of the pipe and showing my machine in front elevation. Fig. 3 is a sectional plane view of same on line y y. Fig. 4 is a cross-section on line l l. Fig. 5 is a cross-section on line 3 3, and Fig. (l is a cross-section on line 2 2.

Ais the pipe or tube and is made up of bent steel sections adapted to be riveted together on longitudinal and circula-r seams. In practice these sections are temporarily secured together by bolts, which are afterward removed when the parts are riveted together.

l5 is a temporary track, of wood, laid in the bottom of the tube on its inner side.

C is a carriage of any suitable construction having flanged wheels c, guided upon said track. This carriage contains two yokes C and C2, in which are journaled at c' and c2 the riveting-frame D. These yokes are provided with screw-nuts CT and CS, by which the ver* tical alincment and adjustment of the axis of rotation of the riveting-frame may be made. Between these nuts and the aXlc-pedestals C" and CA1 are placed spiral springs and C for vertical elasticity. The front and rear axles R of the wheels c are provided with screw hand-wheels R for lateral alincment and adjustment of the axis of rotation of the riveter. Eneircling the axles R and on both sides of the hand-wheels R are spiral springs r to provide lateral elasticity. It will therefore be seen that the inside machine has universal adjustment and elasticity, which are necessary to insure accurate placing and prevent breakage through unequal resistances.

The riveting-frame D is provided with two radial guides d, in which the riveting die holders d move. The riveting-dies E are rcmovably secured to the die-holders, so as to be adjustable and to be changed from time to time to suit the size of the rivet to be upset or shape of the head to be held or formed. The die-holders (Z/ are moved in or out by means of toggle-arms F, which are moved by a piston-rod F', operated by the piston F2, working within the cylinder F3. The pistonrod F' is provided with racks f, which mesh with pinions F", held in position by links f. These pinions also mesh with racks F5 on counteiweights Ffgwhich are guided upon the rivetingframe D. rlhe counterweights F" move in the opposite direction to the piston, piston-rod, rack, and toggle, and hence counteract the inertia of the thrust of these parts and ten d to maintain the structurein an evenbalanced condition during operation, and also remove the tendency to force the carriage forward upon the track.

A suitable valve device Fcontrols the admission of compressed air to the cylinder and puts the piston into act-ion to operate the dies. The valve may be operated by a rod or other suitable means leading to it. The air is delivered through the rear bearing of trunnion c'2 and conveyed to the valve-chamber. By this means the air may be supplied at all times and when the riveting-frame is in various positions.

The frame D lnay be rotated about a longitudinal axis in the journals dL by means of the worm-wheel G, secured to it and operated by the worm G and crank g, carried on the head C'. lly this means the anvil or upsetting dies may be swung around to bring them in line with any hole in the shell of the tube or pipe.

`The carriage is fed forward by means of worm-wheels ll ll on the wheels (e or their IOO IIO

axles R and Worms H', operated by reversible ratchet-lever devices Ho1 of well-known construction, connected by transverse bar H2. By operatingthe ratchet-lever deviee'H3 the carriage is moved either forward or backward. In this manner the riveting-dies may be brought into longitudinal alinement with the holes of the tube and by virtue of the screw motions used locked in position.

Outside of the tube to be riveted is arranged an annular-shaped anvil-frame I, carrying at two or more places in its circumference the anvil--die holders I', which are preferably7 made in the form of screws. Wheels I2 are formed on these screws to work them, and are upon the outer portion of the frame I, with the exception of the lowermost one, and that is upon the inside to reduce to a minimum the depth of the trench necessary for proper operation of the machine. These dieholders may have their inner ends provided with removable dies t, adapted to receive and seat upon the heads of the rivets. r If desired, hand-dies I3 may be employed in connection with the die-holders. (See Fig. This obviates the necessity of securing dies to the holders. It would be advisable in this case to use a hardened-steel button on the end of the die-holder to receive the wear. This anvil-frame I is supported upon wheels 7c, journaled in a frame K, which is hinged at the top to the lower end of a screw K,--passing up through a carriage J, and having a hand wheel K2 as a nut for adjusting the frame K and its ring I vertically. The wheels 7e are secured to spur-gears L, driven by pinions L on a shaft Z, also carried by the frame K, The shaft Zis provided with a worin-wheel L2, with which meshes a worm L3, adapted to be turned by a shaft L4t and chain-wheel L5 for adjusting the ring frame I around the tube. In this manner it is possible to readily bring the dies of the frame I into alinement with the holes of the tube-sheets, and this is neeessary since it is impossible to move the tube.

The carriage J may be made in any suitable manner desired, the construction shown being` somewhat similar to the carriage within the tube. More specifically it consists-of an upper truck-frame J', having four downwardlyextending studs fitting into four socketed bearin gs J 2, in which the shafts for the supporting iianged wheels j are journaled. Springs J 3 are employed between the parts J and J 2 to support the truck-frame with provision for elasticity. The object of this is to enable the ring frame I and its dies to adjust themselves to the cylinder to be riveted and prevent breakage. a track M, temporarily supported upon the top and outer side of the tube being riveted.

. The rails are preferably of wood, but may be made in any suitable manner. The carriage .may be fed along the track by rotating the rear shaft 7i of the supporting-wheels, and this may be done by securing to it a worm- Wheel N, with which meshes a worm NC The This carriage runs upon A worm is driven by bevel-gear N 2, a shaft N3, and chain-wheel N4. In this manner the carriage and its anvil or ring frame I may be conveyed or adjusted along the length of the tube A.

In riveting a horizontal tube the ring or anvil frame hangs transversely to the tube and in the proper position, but when the tube is on an incline it becomes necessary to hold the frame I at an angle to a vertical plane, and this is secured in the following manner: Depending from the carriage J are rods O O, arranged in pairs, two on each side of the tube. The lower ends of each pair of rods are united and support a grooved guide-roller P, upon which the ring or anvil frame Irests and by which it is guided. The rods O O' are furnished with adjusting devices p,adapt ed to lengthen or shorten the rods relatively and thus cause the guide-rollers to assume different positions. The frame K, being hinged to the screw K', is permitted to swing and allow the anvil-frame I to assume the angle to the vertical position desired or required under the guidance of the rollers P P. I do not confine myself to any special means for securing this angular adjustment, but merely set out this form as an effective means for securing the desired end.

The construction of the frame I is particularly strong because the strain transmitted to it by the action of the riveting-power devices is divided and taken up by the two halves upon each side of the die acting upon the rivet-head.

In my present invention the frame is ring shaped and receives equalizing strains in opposite directions, and being continuous in shape secures the greatest possible strength with the least metal. Furthermore, the use of an adjustable annular anvil-frame and an independent adjustable riveting-frame centrally disposed to the anvil-frame is new, as' far as I ain aware, and hence my invention comprehends this improvement broadly.

In operating my improved riveting-machine the adjustment of the inner and outer dies is secured and the rivets inserted from the outside. By employing the hand dies there is a saving in time of adjustment in the anvil-dies, since it is not necessary to move them to the same extent, and, further, it is not necessary to be so accurate in the alinement of the parts. As the machine is only adapted for rivetinglarge tubes or cylinderssuch as water-mains, boilers, chimney-stacks, dre-it is easy for an operator to get inside so as to operate the feeding devices and secure theproper adjustment of the riveting-frame.

Hence it is not necessary to extend these operating parts to the end of the tube. The power is supplied by a suitable hose or flexible tube, and the motive power may be compressed air, hydraulic pressure, or steam.

While I prefer to make the anvil or outer frame a ring or complete annular frame, I nevertheless wish it to be understood that IOO IIO

this frame may be made to extend around only a little more than half the diameter of the tube to beriveted; but in this case it must be made very stron g and would require more metal for the same strength than if made in the shape of a ring, as shown. lVhen, therefore, I use the word annular frame in the claims, the same includes the above equivalent for the complete ring orl annular frame. I also call attention to the fact that as the thrust must take place upon diametrically opposite sides of the tube at the same time either both sets of dies must act upon rivets or one pair upon a rivet and the other pair substituted by blanks or thrust parts for transmitting the strains through the tubesheet. Hence wherever two sets of dies are specified in the claims they will be answered by such construction, since the blanks or thrust parts will in effect be the practical equivalent of the dies in this case in taking up the thrust.

In using the tube-riveting machine herein described in a shop it is obvious that the inside aud outside portions might be fixed longitudinally and the tube to be riveted moved with respect thereto.

lVhile I prefer the construction shown, the details thereof may be modified without departing from the spirit of my invention.

That I claim as new, and desire to secure by Letters Patent, is-

l. Ina tube-rivetingmachine, the combination of a movable support adapted to be moved through the tube to be riveted, a rivetingframe journaled on a longitudinal axis on the movable support, an anvil-frame encircling the riveting-frame and tube and provided with anvil-dies, a movable carriage adapted to be moved longitudinally above the tube, and a frame supporting the anvil-f rame carried by the movable carriage.

2. In a tube-riveting in achinc, the combination of a movable support adapted to be moved through the tube to be riveted, a rivetingframe journaled on a longitudinal axis upon the movable support, feeding devices for feeding the movable support longitudinally through the tube, an anvil-frame encircling the riveting-frame and provided with anvildies, a movable carriage adapted to be moved longitudinally above the tube, a frame supporting the anvil-frame carried by the movable carriage,and means for adjusting the anvil-frame circ u mferen tiall y in the supportin gframe.

3. In atube-riveting machine, the combination of a movable support adapted to be moved through the tube to be riveted, a rivetingframe journaled on a longitudinal axis upon thc movable support, feeding devices for feeding the movable support longitudinally through the tube, adjusting devices for adjusting the riveting-frame relatively to the longitudinal axis of the tube, an anvil-frame encircling the riveting-frame and provided with anvil-dies, a movable carriage adapted to be moved longitudinally above the tube, a frame supporting the anvil-frame carried by the movable carriage, means for feeding the movable carriage longitudinally over the tube, and means for adjusting the ring anvilframe eircumferentially in the supportingframe.

4C. In a tube-riveting machine, the combination of a movable su pportadapted to be moved through the tube to be riveted, a rivetingframe journaled on a longitudinal axis upon the movable support, adjusting devices for adjusting the riveting-frame about its longitudinal axis, an anvil-frame encircling the riveting-frame and provided with anvil-dies, means to adjust the anvil-dies radially, a movable carriage adapted to be moved longitudinally above the tube, and means for adjusting the anvil-frame circun'lfercntially relatively to the tube.

5. In atubc-riveting machine, the combination of a movable support adapted to be moved through the tube to be riveted, a rivetingframe journaled on a longitudinal axis upon the movable support, adjusting devices for adjusting the riveting-frame about its longivtudinal axis, an anvil-frame encircling the riveting-frame and provided with anvil-dies, means to ad just the anvil-dies radially, a movable carriage adapted to be moved longitudinally above the tube, means for adj listing the anvil-frame circumferentially relatively to the tube, and an adjustable guide for the anvil-frame carried by the movable carriage for holding it at an angle to a vertical line.

G. In atube-riveting machine, the combination of a movable support adapted to be moved through the tube to be riveted, a rivetingframe journaled on a longitudinal axis upon the movable support, feeding devices for feeding the movable support longitudinally through the tube, adjusting devices for adjusting the riveting-frame about its longitudinal axis, springs interposed between the riveting-frame and the movable support for elastically sustaining the frame, an anvilframe encircling the riveting-frame and provided with anvildies, a movable carriage adapted to be moved longitudinally above the tube, a frame supporting the ring anvil-f rame carried by the movable carriage, means for feeding the movable carriage longitudinally over the tube, and means for adjusting the anvil-frame circumfcrentially in the supporting-frame.

7. In a tube-riveting machine, the combination of a movable support adapted to be moved through the tube to be riveted, a rivetingframe journaled on a longitudinal axis upon the movable support, feeding devices for feeding the movable support longitudinally through the tube, adjusting devices for adjusting the riveting-frame about its longitudinal axis, an anvil-frame encircling the riveting-frame and provided with anvil-dies, a movable carriage adapted to be moved longitudinally above the tube, elastic supports On IOO IIO

the movable carriage for elastically supporting the anvil-frame, and means for feeding the movable carriage longitudinally over the tube.

8. In atube-riveting machine, the combination of a movable support adapted to be moved through the tube to be riveted, a rivetingframe vjournaled on a longitudinal aXis upon the movable support, adjusting devices for adjusting the riveting-frame relatively to the longitudinal axis of the tube, an anvil-frame encircling the riveting-frame and provided with anvil-dies, a movable carriage adapted to be moved longitudinally above the tube, and elastic supports on the movable carriage for elastically supporting the anvil-frame.

9. In a tube-riveting machine, the combination-of a movable support adapted to be indefinitely moved through and wholly supported by the tube to be riveted, a rivetingframe adjustably sustained upon the movable support provided with one or more radiallymovable dies and power devices to move the dies, and an anvil-frame encircling the riveting-frame independently movable relatively to the movable support and provided with one or more anvil-dies.

10. In a tube-riveting` machine, the combination of a movable support adapted to be moved through the tube to be riveted, a riveting-frame adjustably sustained upon the movable support provided with one or more radially-movable dies and power devices to move the dies, an anvil-frame encircling the 1 riveting-frame and provided with one or more anvil-dies, a movable carriage adapted to be moved longitudinally above the tube, a frame supporting the anvil-frame carried by the movable carriage, and means for adjusting the anvil-frame circumferentially in the supporting-frame.

11. In a tube-riveting machine, the combination of a movable support adapted to be moved through the tube to be riveted, a riveting-frame adjustably sustained upon the movable support, an anvil-frame encircling the riveting-frame and provided with one or more anvil-dies, a movable carriage adapted to be moved longitudinally above the tube, a frame supporting the anvil-frame carried by themovable carriage, and a vertically-adj ustable connection between the frame supporting the anvil-frame and movable carriage.

12. In a tube-riveting machine, the combination of a movable support adapted to be moved through the tube to be riveted, a riveting-frame adjustably sustained upon the movable support, an anvil-frame encircling the riveting-frame and provided with one or more anvil-dies, a movable carriage adapted to be moved longitudinally above the tube, a frame supporting the anvil-frame carried by the movable carriage, a vertically-ad j ustable connection between the frame supporting the anvil-frame and movable carriage, and means for adjusting the anvil-frame circumferentiall y in the supporting-frame.

13. In a tube-riveting machine, the combination of a movable support adapted to be moved through the tube to be riveted, a riveting-frame adjustably sustained upon the movable support, an anvil-frame encircling the riveting-frame and provided with anvildies, a movable carriage adapted to be moved longitudinally above the tube, and an adjustable guide for the anvil-frame carried by the movable carriage for holding it at an angle to a vertical line.

14. In a tube-riveting machine, the combination of a movable support adapted to be moved through the tube to be riveted, a riveting-frame adjustably sustained upon the movable support, an anvil-frame encircling the riveting-frame and provided with anvildies, a movable carriage adapted to be moved longitudinally above the tube, means for adjusting the anvil-frame circumferentially in the supportingframe, and an adjustable guide forthe anvil-frame carried by the movable carriage for holding it at an angle to a ver'tical line.

15. In a tube-riveting machine, the combination of supports adapted to be moved through the tube to be riveted, a rivetingframe adj ustably sustained upon the supports for adjusting the riveting-frame relatively to the longitudinal axis of the tube, elastic supports interposed between the riveting-frame and the tube, and an anvil-frame encircling the riveting-frame and provided with anvil-dies.

16. In a tube-riveting machine, the combination of a support adapted to be indefinitely moved through and wholly supported by the tube to be riveted, a riveting-frame carried by the movable support provided with one or more radially-movable dies and power devices to move the dies, and an anvil-frame encircling the riveting-frame and independently movable relatively to the support and riveting-frame and provided with one or more anvil-dies.

17. In a tube-riveting machine, the combination of a support adapted to be moved through the tube to be riveted, a rivetingframe carried by the support provided with one or more radially-movable dies and power devices to move the dies, an anvil-frame encircling the riveting-frame and provided with one or more anvil-dies, and means for adjusting the anvil-frame circumferentially about the tube.

18. In a tube-riveting machine, the combination of a movable support adapted to be moved through the tube to be riveted, a riveting-frame carried by the movable support provided with one or more radially-movable dies and power devices to move the dies, elastic supports interposed between the rivetingf rame and the movable support for elastically IOO IIO

IZO

sustaining the frame, an anvil-frame encircling the riveting-frame and provided with one or' more anvil-dies, a movable carriage, and elastic supports on the movable carriage for elastically supporting the anvil-frame.

lf). In a tube-riveting machine,the combination of a movable support adapted to be moved through the tube to be riveted, a riveting-frame carried by the movable support provided with one or more radially-movablc dies and power devices to move the dies, an anvil-f rame encircling the riveting-frame and provided with one or more anvil-dies, and relativelyadjustable to the movable support and riveting-frame, and a vertically-adjustable support for the anvil-frame.

20. In a tube-riveting machine, the combination of a movable support adapted to be moved through the tube to be riveted, a riveting-frame carried by the movable support provided with one or more radially-movable dies and power devices to move the dies, an anvil-traine encircling the riveting-frame and provided with anvil-dies, and means for adjusting the anvil frame ci reumferel'xtially about the movable support for the rivetingi' rame.

2l. In a tube-riveting machine, the combination of a movable support adapted to be moved through the tube to be riveted, a riveting-trame carried by the movable supportprovided with one or more radially-movable dies and power devices to move the dies, an anvil-frame encircling the riveting-frame and provided with one or more anvil-dies, means to adjust the anvil-dies radially, a movable carriage adapted to be moved longitudinally above the tube, and means for adjusting the anvil-frame cireumferentially relatively to the movable carriage.

22. In a tube-riveting machine, the combination of a movable support adapted to be moved through the tube to be riveted, a riveting-frame carried by the movable support provided with one or more radially-movable dies and power devices to move the dies, an anvil-frame encirelin g the riveting-frame and provided with one or more anvil-dies, means to adjust the anvil-dies radially, a movable carriage adapted to be moved longitudinally above the tube and support the anvil-frame, means for adjusting the anvil-frame circumferentially about the riveting-frame, and a vertically-adjustable connection between the anvil-frame and movable carriage.

23. In a tube-riveting machine, the combination of a support adapted to be indefinitely moved through and be supported wholly by the tube to be riveted, a riveting-frame carried by the support provided with one or more radially-movable dies and power devices to move the dies, and one or more anvil-dies arranged upon the outer side of the tube to act in conjunction with the riveting-dies.

2i. In a tube-riveting machine, the combination of a movablesupport adapted to be indefinitely moved through and supported wholly by the tube to be riveted and carrying one or more radially-movable dies and powei devices to move the dies, and an annular frame adjustable independently et the movable support encircling the tube and movable support and provided with one or more adjustable anvil-dies.

25. In a tube-riveting machine, the combination of a movable support adapted to be moved through the tube to be riveted, a riveting-frame carried by the movable support provided with one or more radially-movable dies and power devices to move the dies, au anvil-frame encircling the riveting-frame and provided with one or more anvil-dies, and an adjustable guide for the anvil-frame for holding it at an angle to a vertical line.

20. In a tube-riveting machine, the combination of a movable support adapted to be moved through the tube to be riveted, a riveting-frame carried bythe movable support, an anvil-frame encircling the riveting-frame and provided with one or more anvil-dies, a movable carriage adapted to be moved longitudinally above the tube, means for supporting the anvil-frame from the movable carriage, means for adjusting the anvil-frame circumferentially in the support, and an adjustable guide for the an vil-frame carried by the movable carriage for holding it at an angle to a vertical line.

27. In a tube-riveting machine, the combination of a riveting-frame, provided with one or more radially-moval.)le dies and power devices to move the dies, an anvil-frame encircling the riveting-frame and provided with one or more anvil-dies, and adjustable, supporting devices for sustaining both the riveting-frame and anvil-frame by the tube being riveted and permitting independent relative adjustment.

28. In a tube-riveting machine the combination of a riveting-frame, provided with one or more radially-movable dies and power de` vices to move the dies, an anvil-frame encircling the riveting-frame and provided with one or more anvil-dies, and means for adjusting the an vil-frame relatively to the rivetingframe and tube.

29. In a tube-riveting machine, a riveting portion of the machine located and supported wholly within and by the tube arranged to exert power in line with a diameter of the tube, combined with an annular frame provided with dies encirelingthe tube movable circumferentially and independently of the riveting portion and arranged to sustain the riveting reaction of the interior machine, whereby the rivet or rivets may be headed.

30. In a tube-riveting machine, the combination of a power-machine within the tube arranged to exert power on diametrical lilies for upsetting one or more rivets at atimc, adjusting devices to rotate said machine about the axis of the tube, an annular balanced frame completely encircling the tube having one or more anvil-dies thereon, and means to rotate IOO tog

TIO

said anvil-dies about the tube to make them act in conjunction with the riveting die or dies of the internal machine to upset rivets.

3l. In a tube-riveting machine, the combination of a power-machine within the tube adapted to exert pressure on diametrical lines, devices to rotate said machine, devices to move said machine along the tube, an annular frame encircling the tube and carrying one or more anvil-dies, and means to adjust said annular frame circumferentially and longitudinally of the tube to coperate'with the internal machine in upsetting rivets.

32. In a tube-riveting machine, the combination of an outer frame structure extending more than half-way around the tube to be riveted and adjustable circumferentially about the tube, an inner structure arranged within Y the tube supported thereby and adjustable about an axis approximately coincident with the center of the tube, and independently of the outer frame structure, and dies for riveting carried by the said frames adapted to operate together upon a rivet passing through the shell of the tube.

33. In a tube-riveting machine, the combination of an outer frame structure extending more than half-way around the tube to be riveted and adjustable circumferentially about the tube as a support, an inner structure arranged within and supported by the tube and adjustable about an axis approximatelycoin- @ident With the center of the tube, and inde-v pendently of the outer frame structure, dies for riveting carried by the said frames adapted to operate together upon a rivet passing through the shell of the tube, and means for moving the dies relatively to'or from each other.

34. In a tube-riveting machine, the combination of inner and outer frames having their Weight supported respectively by the inner bottom and outer top of the tube to be riveted and their positions independently gov# erned thereby, and riveting devices carried by said frames acting in conjunction for driving or upsetting a rivet through the shell of the tube.

35. In a riveting-machine, the combination of anvil and riveting dies, each independently movable about a substantially common axis, power devices to operate said dies, and means to support said dies in various coacting adjustments in a circle or curved orbit, wholly to one side of the common axis.

36. In a riveting-machine, the combination of anvil and riveting dies, each independently movable about a substantially common axis, power devices to operate said dies, means to support said dies in various coacting adjustments in a circle or curved orbit, sustained by the tube to be riveted, and a tirm or non-elastic connection between said dies and the diametrically opposite part of the tube through which the rivet is being` driven.

37. In a tube-riveting machine, the combination of an annular or anvil frame adapted to be supported transversely to the length of the tube and provided with anvil-dies or thrust parts arranged to be brought into contact with rivets or with a rivet and the tube respectively upon opposite sides of the tube, and an internal riveting mechanism inter posed between the anvil-dies or thrust parts and sustained Wholly by the tube being riveted about the axis of which it is movable independently of the anvil-dies and further provided with dies or thrust parts corresponding to the anvil-dies or thrust parts of the annular or anvil frame and adapted to upset one or more rivets.

3S. In a tube-riveting machine, the combination of an annular or anvil frame adapted to be supported transversely to the length of the tube and by the tube with provision of adjustment about the axis of the tube and provided with anvil-dies or thrust parts arranged to be brought into contact With rivets or with a rivet and thetube respectively upon opposite sides of the tube, and an internal riveting mechanism interposed between the anvil dies or thrust parts and sustained wholly by the tube being riveted and movable about its axis independently of the anvil-frame and capable of adjustment within the tube to correspond to the adjustment of the annular or anvil frame and further provided With dies or thrust parts corresponding to the anvildies or thrust parts of the annular or anvil frame and adapted to upset one or more rivets.

39. In a tube-riveting machine, the combination of two anvil-dies or thrust parts circumferentially adjustable about the longitudinal axis of a stationary tube to be riveted and adapted to act upon rivets or a rivet and the tube respectively upon opposite sides of the tube, and internal riveting mechanism arranged Within and supported Wholly by the tube operating in conjunction With the said anvil-dies or thrust parts, and adjustable also about the axis of the tube independently of the anvil-dies or thrust parts.

40. In a tube-riveting machine, the combination of two anvil-dies or thrust parts circumferentially adjustable about the longitudinal axis ot' the tube to be riveted and movable longitudinally thereto and adapted to act upon rivets or a rivet and the tube respectively upon opposite sides of the tube and having their weight sustained by the tube beingriveted, and internal riveting mechanism arranged Within and havin gits Weight wholly sustained by the tube operating in conjunction with the said anvil-dies or thrust parts, and independently movable about the axis of the tube and longitudinally Within the same.

4l. In a tube-riveting machine, the combination of anvil and riveting dies, means to operate said dies, means to support the dies in coacting position, wholly to one side of the center of the tube and axis of circular adj ustment, and means for producing independent circular adjustments between the dies and tube relatively one to the other whereby the IOO IIO

rivets about the circumference of the tube circlingthe riveting-frame :ind provided with while stationary may be upset. one or more anvil-dies. [o

42. In :t tube-riveting machine, the combi- In testimony of which invention I have nation of a riveting-frame, provided with one hereunto set my hand.

or more radially-movable dies and power dc- GEORGE II. PIIGRAM,

vices to move the dies, elastic Supports for XVitiiesses:

the riveting-frame whereby it may adjust \V. E. CRITZER,

itself within the tube, and mi anvii-frzune en- \V. F. THOMAS. 

